salomon



(No Model.)

B. SALOMON. ROTARY 0111111111 11111 0111112.

No. 261,049. PatentdJHly 11, 1882.

UNITED; STATE ATENT. rinse.

ETIENNESALOMON, or MONTREAL, ounnnc, oAsAnA, 'Assieuon or one- .HALF TOEDMON-D RMANT, or SAME rLAcn.

ROTARY CUTTiNG-WlACMlNE- SPECIFICATION forming part f Letters Patent No. 281,049, dated July 1'1, 1852;

Application filed Apri17,1882. on) model.) i

To all whom it may concern:

Be it known that I, ETIENNE SALOMON, of t .the city of Montreal, in the District of Montreal and Province of Quebec, in the Domin- 5 ion of Canada, have, invented a certain new and useful Improvement in Rotary Cutters;

and I do hereby declare that the following is a full, clear, and exact description of the same. My invention relates to improvements in 1o that class of rotary cutters which are used for making slots inmetal plates, 850., and has for its object to produce a cutting-tool which will go entirely through the plate upon which it is to operate Without oflering any obstruction whatever in the'shape ofa shaft or axis, and one which will completely finish the slotfrqm one side of the article, and thus avoid the necessity of filing or otherwise working out the corners. v 7 I Heretofore in cutting-tools of this description it has been absolutely necessary for the rotary cutter to have a shaft through its center to serve as an axis for it to revolve upon, and thus it has been impossible to cut right through the plate without leavingthe corners incomplete, or necessitates a double set of cutters, or requires the plate or article to be reversed and the operation again performed from the opposite side.

It will at once be seen that the reason of this is that however small'thc shaft or spindle of the rotary cutter may be in proportion to its diameter, said cutter cannot pass through thematerial upon which it is operating farther 5 than the outer diameter of its shaft will allow, thus leaving uncut a part of the slot equal to at least half the diameter of the cutter-shaft.

My invention consists broadly in substituting for a shaft as a means for the cutter to re- 40 volve upon a pairof eyes orlugs projecting from the cutter-stock and countersunk in said rotary cutter so that they may not be more than flush with the sides of same, and in rotating said cutter by means of a gear-wheel intermeshing ,5 with the teeth of said cutter.

For more complete comprehension, however, of my improvement, reference must be had to the accompanying drawings, in which letters A of reference similar to those used in this spool fication indicate like parts.

Figure 1 is an elevation of a cutter-stock arranged w i th drivi n g-shaft to operate according to my invention; Fig. 2, a transverse sectional elevationof same Fig.3,an end view, showin g also in dotted lines a brush for clearing cutterteeth; and Fig. 4,21 sectional detail of a modi fication of my invention.

A represents any ordinary or suitable euttcrstoek, but preferably of somewhat the shape shown, and made with a removable piece, B. 6o i is an eye for aflixing the cutter stock to a machine or table. It is obvious, however, that difi'erent means of attachment may be used at discretion or according to circumstances.

The removable piece B is attached to the outterstock proper by a screw, 13', or other suitable device. 1

D is a shaft or spindle, to which a revolw ing motion is given in any convenientsvay.

This shaft passes through and has its bearings in the cutter-stock A and removable piece B, between which, in a spade left for the purpose,

is placed a toothed wheel, E, firmly mounted on said shaft D and revolving with it.

The rotarycutter F is constructed with teeth f, each having a knife-edge, as shown more particularly in Fig. 3. These teeth f i utermesh with the toothed wheel E, so that as the latterrevolvesin one direction the cutter turns in the other, thus'insuring that the knife-edges so cannot be injured by so intermeshing', as itwill be seen that the teeth of-the wheel E always bear against the reverse side of the cuttingteeth f.

The rotary cutter F has hollow or annularlychanneled sidcs,as shown in Figsil and 4, and the cutter-stock A and movable piece B have eyes or lugs (marked respectively a and b) preferably made in one therewith, which fit or are countersunk into thehollow or channeled sides 0 of said rotary cutter F, so ast-o be flush with or lower than the outcr'sidcs of said cutter.

In Fig. 2 l have shown a screw, f, passing through the eyes orlugs a b and cutterlfibut this screw may be omitted, as in Fig. 4, since 5 it is not required for the cutter to rotate upon, but isonly inserted in some cases to hold the eye I) or outer extremity of the movable piece B firmly to the cutter-stock proper. V

It will be seen that the shorter the cuttingtoo teeth are made the larger-"I majmake the eyes orlugsab,'and consequently the distance of the shoulders A A of the cutter-stock from the intermeshwith the toothed wheel E; butthisbrush is not always necessary, and may be used at discretion.

The operation'ot' my invention will be so clearly understood from the foregoing as to need no further description.

What I claim, and desire to secure by Letters Patent, is as follows:

1. A rotary cutter revolving upon projections from the cutter-stock, said projections being sunk in the sides ofthe cutter, substantially as and {or the purpose described.

2. The combination, with a cutter-stock, of

aspur driving-wheel and'zt rotary cutter, substantially in the manner herein set forth.

' 3. The combination, with the cutter-stock A, having removable piece B fastenedthereto by screws B 'and f, and provided with eyes or lugs (0b, of the rotary cutter F, revolved through toothed wheel E by shaft D, substantially as and for the purpose set forth. t r i r. SALOMON.

Witnesses: i

R. A. .KELLOND, I

I. A. RENNIE, 

